Week 9 Flashcards
What are the main orders and genera of protozoa?

What are the common “groupings” of protozoa?

Generally what are protozoa? How many are parasitic? Locomotion? Nutrition?

What are the four main ways of locomotion for protozoa?


Avian trichomoniosis

Leishmaniosis

Cattle- neosporosis
What is a apicocomplexa?
Apicomplexa- to penetrate host cells

What is the apical complex of protozoa?
Apical complex- assists invasion of host cell… once inside–> forms Parasitophorus Vacuole- asexual multiplication by binary fision inside


Canine babesiosis
what is sporulation?
Unless they are sporulated (= embryonated) they are not infective
Within the oocyst.
What is the apicomplexan life cycle (direct)?
* once sporulated and in the cell–> merogany (each species have a certain number of cycles of merogany- the faster and the more cycles the more pathogenic the organism is)–> cell will rupture= causes necrosis–> once the zoites start multiplying they are known as merozoites–> rupture the cell–> repenetrate–> can become macrogametes (female form) or microgametes (male form)–> matures to form an oocyst (which exits the faeces UNSPORULATED- takes 3 days– sporulate and become infective)

What is schizogony? What is the starting age and product?
What is gametogony? Starting age? And product?
What is sporogony? Starting age? And product?

How do you generally identify sporulated oocyst?
** error Sarcocystis– 0:2:4 (sporocysts in faeces)
Cryptosporidium 1:0:4

Divisions of faecal transmitted eucoccidia?

If you see unsporulated oocysts in faeces, what is it likely to be?
coccidia
Eimeria and Cystisospora- Definitive host? Effect on host? Husbandry risk factors?
* species specificity has to do with immunity of species


Unsporulated and sporulated oocysts of Cystisospora

Eimeria and Cystisospora
Predisposing risk factors coccidiosis in livestock?
** usually younger susceptible animals
* overcrowding, changes in feed, etc.

Vector-borne apicomplexa

Eimeria- DH? Significance? Pathogenecity?

Eimeria Life Cycle
































































